But the disparity is greater here than in most developed nations.
The U.S. has a higher level of income inequality than Europe, as well as Canada, Australia and South Korea, according to data gathered by the World Bank.
And, while many nations have seen income inequality rise within their borders, the United States has experienced a more rapid increase in recent decades, widening the wealth gap even more.
"The top 1% in the U.S. really receive much more than in Western European countries," said Branko Milanovic, an economist with the World Bank and author of "The Haves and the Have-Nots."
America ranks in the bottom third of the list of 90 countries that Milanovic compiled, which is mainly based on 2008 data of per capita income or consumption in each nation.money.cnn.com/2011/11/08/news/economy/global_income_inequality/index.htm